20187020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20599}}^1$

素因数の和:20622

約数の個数: 36

約数和(自身を含む): 49316400

約数和(自身を除く): 29129380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20599, 41198, 82396, 102995, 144193, 205990, 288386, 411980, 576772, 720965, 1009351, 1441930, 2018702, 2883860, 4037404, 5046755, 10093510, 20187020]

約数ペア:

[(1, 20187020), (2, 10093510), (4, 5046755), (5, 4037404), (7, 2883860), (10, 2018702), (14, 1441930), (20, 1009351), (28, 720965), (35, 576772), (49, 411980), (70, 288386), (98, 205990), (140, 144193), (196, 102995), (245, 82396), (490, 41198), (980, 20599)]